The Regal Revolution Big Game Jaw Vise Head is designed to help you tie flies for big game fish like tarpon, billfish, pike, musky, salmon, and bass! Regular-sized vises aren't built to hold the large hooks needed to create bigger patterns. The Big Game Jaw, on the other hand, will hold an immensely secure grip on hook sizes 22 to 5/0. This versatile fly tying vise head is equipped with two hook grooves machined into one side of the jaw. If you want to tie flies to catch larger fish species, then you've found the right tool in the Regal Revolution Big Game Jaw Vise Head! Designed for tarpon, billfish, pike, musky, salmon, and bass 2 hook grooves machined into one side of the jaw Designed to hold hook sizes 22 to 5/0 Manufacturer's lifetime limited warranty Qty. per Pack: 1 The Regal Revolution Big Game Jaw Vise Head is made in the U.S.A.